Another theme is redemption. Sometimes the OC helps Hela find a new path, away from her more villainous tendencies. It's like a journey of self - discovery for Hela through her relationship with the OC. And in some fanfictions, the OC also has their own redemption arc within the context of the Avengers world.
A common theme is power dynamics. Since Hela is very powerful, exploring how an OC can interact with her in terms of power is often seen. For example, whether the OC is intimidated by her power or tries to gain power from her.
Love or at least a strong bond is also a theme. It could be a platonic bond where they respect and rely on each other, or in some cases, a romantic relationship. This bond often forms the core of the story and drives the plot as they face challenges together within the Avengers - filled world.
Power dynamics is a common theme. Hela is a very powerful character, so exploring how an OC interacts with her in terms of power, whether they are in awe of her power, or try to gain power from her, is often seen.
One common theme is self - discovery. The male OC often has to figure out his place in the world of the Avengers and his own powers. For example, he might start off not knowing he has a special ability and then gradually discovers it through his adventures with the team.
One common theme is the discovery of the soulmate bond. The OC usually has to figure out their connection to the Avengers. Another theme is acceptance. The Avengers have to accept this new person in their midst who is their soulmate. And of course, there's often the theme of love and loyalty as the relationships develop.
Love and hate relationships are also quite common. They might start off as enemies or rivals, but then over time, feelings change. It could be a slow - burn kind of relationship where they gradually come to understand and care for each other. There can also be themes of revenge, especially considering Hela's backstory. She might seek revenge against those who wronged her, and Loki could be involved in that in some way in the fanfiction.
There's also 'Hela and the Mysterious OC'. This one focuses on a more mysterious OC who has some hidden powers. Hela is initially suspicious but then realizes they can achieve great things together. It's full of action scenes where they battle against common enemies in the Avengers' world. The relationship between Hela and the OC evolves in a very engaging way.
Power and responsibility are also common. The OC may have new powers and has to learn how to use them right. And there's often a theme of acceptance, as the Avengers have to accept the OC into their group.
A theme that's quite popular is redemption. Maybe the OC has a troubled past, and Natasha helps them to find a new path. In the process, they fall in love. Also, there are stories where the OC has a special power or skill that complements Natasha's abilities, and they team up not just as lovers but also as a powerful duo in the Avengers. This often leads to many action - packed and emotional scenes in the fanfictions.
One common theme is redemption. Hela is often portrayed as finding redemption through her relationship with Thor. Another theme is the power of love to change a person. In these fictions, Thor's love might change Hela's dark ways.
A common theme is the exploration of different cultures. Harry's world has a very distinct wizarding culture, and Hela is from a different realm with its own set of rules and values. Fanfictions may show how they learn from each other's cultures. Additionally, the concept of fate is often explored. It could be that they are fated to meet and change the course of each other's lives, which makes for an interesting narrative in these fanfictions.
One common theme is the outsider - within concept. The OC is usually an outsider who then becomes part of the Avengers' world, and the harem forms around that dynamic. Another theme is the exploration of different powers and how they interact. For example, if the OC has a unique power, how does it mesh with the powers of the Avengers in the context of the relationships.